Starting a command in the background | LinuC Level 1 101 Exam original practice question

1.01.4Basic

Start the long-running report.sh from an interactive shell and immediately regain the prompt.

Which input is appropriate?

Hint 1: Focus on the requirement

Choose the shell control that returns the prompt while the command keeps running.

Hint 2: Key terms

Review the short definitions before comparing the process and job-control choices.

Foreground job: A job connected to the terminal input while the shell waits for it.
Background job: A job that lets the shell accept another command immediately.
Ampersand: The shell metacharacter that starts a command as a background job.

Detailed explanation

Correct./report.sh &

Correct. ./report.sh & starts the command in the background.

Incorrect./report.sh |

Incorrect. A pipe requires a command on the right side.

Incorrect./report.sh >

Incorrect. A redirection operator requires a destination.

Incorrect./report.sh &&

Incorrect. && waits for the first command to succeed before running another.

An example you can run in a temporary verification environment.

sleep 0.1 & wait

短命background processを待って正常終了

Environment: Bash 5.x
Use a disposable process or test shell when checking lifecycle commands.
Exact output and option names can vary slightly by distribution and tool version.

Foundation review

An ampersand changes shell job control; it does not by itself redirect output or create a process supervisor.

Remember that background output can still reach the terminal unless a redirection is added.

Question IDKL-101-353

EnvironmentBash 5.x

Last technical review2026-08-13

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